One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,12,7,10,5,11)(3,13,15,25,16,8,20,23)(4,17,18,24,19,26,21,9)(14,28,30,27,31,32,29,22)(33,34)(35,44)(36,48)(37,53)(38,42)(39,43)(40,46)(41,51)(45,58)(47,56)(49,63)(50,59)(52,62)(54,57)(55,64)(60,61)(1,3,5,15,7,16,6,20)(2,8,11,23,10,13,12,25)(4,14,18,29,19,31,21,30)(9,22,17,32,24,27,26,28)(33,35)(34,40)(36,49,51,64)(37,54)(38,46)(39,47)(41,58,48,60)(42,56)(43,57)(44,53)(45,52,61,50)(55,59,63,62)(1,4)(2,9,10,24)(3,14)(5,18)(6,21)(7,19)(8,22,13,27)(11,17,12,26)(15,29)(16,31)(20,30)(23,32,25,28)(33,36,37,50,39,51,38,52)(34,41,42,59,43,48,53,62)(35,45,46,49,47,61,54,64)(40,55,44,60,57,63,56,58)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.